Fastener structure, case body, mold for producing case body, and operation method of mold

Abstract

To provide a fastener structure, a case body, a mold for producing the case body, and an operation method of the mold, in a technical field of a suitcase.SOLUTION: A fastener structure connects a casing of a case body, and includes two fastener bodies. The fastener body includes a fastener tape and a carina. The fastener tape has one end provided with a first fastener coil-like tooth, and the other end connected to a back fabric of the case body. The first fastener coil-like tooth is used to be engaged with a first fastener coil-like tooth of the other fastener body, and the carina is connected to the fastener tape. The case body includes the fastener structure. The case body is provided with a groove for storing the carina, and by fixing the carina in the groove, the fastener tape is fixed to the case body.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This application relates to the technical field of suitcases, and specifically to a fastener structure, a case body, and a mold for manufacturing the case body and a method for operating the mold.

Background Art

[0002] Currently, commercially available trolley cases can be broadly divided into two types: a case with a fastener (where the opening and closing of the case are realized by a fastener) and a lock-type case (where the opening and closing are realized by a lock with a mechanism). Among them, when in use, the case with a fastener has a larger capacity, is lighter, and is easier to use. Therefore, the case with a fastener is more widely used and occupies a dominant position in the suitcase sales market. The production of conventional cases with fasteners mostly fixes the fastener and the casing of the case by sewing with a sewing machine (commonly known as a post-head sewing machine) manually. Such a production method based on manual sewing by a sewing machine causes problems such as high requirements for the skill proficiency of employees' duties, a high defect rate, low efficiency, and high labor costs. With the increasingly fierce competition in the manufacturing industry, suitcase manufacturers are also facing industrial upgrading. If they continue to adopt the conventional assembly method based on fasteners, they will undoubtedly lose their competitive advantage in the industry and get stuck as a company.

[0003] In addition, the conventional fastener structure is sewn by a sewing machine by hand together with a rubber strip to the case body (casing). The sewing line of the fastener is under the rubber strip. As a specific operation procedure, first, the lining and the case body are adhered, and then the rubber strip is placed over the case body together with the fastener and sewn with a sewing machine. The work of this part takes a lot of time and must be completed by a very experienced post-head sewing machine operator. When manually operating the post-head sewing machine for sewing, the labor cost is high. In addition, when the conventional fastener is attached to the case body, the rubber strip and the frame are about 2 to 5 mm higher than the case body, which affects the aesthetic appearance of the whole case. Also, the case opening of the conventional case with a fastener is a vertical surface, and the strength of the case opening is small and it is easy to deform.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] To improve the problems of high cost of the conventional case with a fastener, the rubber strip and the frame being higher than the case body after assembly, poor strength of the case opening, and the need for all manual sewing in the assembly of the conventional case with a fastener, with a high defect rate and high labor cost, the present invention adopts the following technical solutions.

Means for Solving the Problems

[0006] The fastener structure for connecting the upper casing and the lower casing of the case body includes two fastener bodies. The fastener body includes a fastener tape and a keel. One end of the fastener tape is provided with first fastener engaging teeth, and the other end is connected to the lining of the case body. The first fastener engaging teeth mesh with the first fastener engaging teeth of another fastener body. Here, the keel is connected to the fastener tape, and by fixedly connecting the keel to the case body, the fastener body is fixed to the case body.

[0007] As a further improvement, on the other end of the fastener tape opposite to the first fastener engaging teeth, second fastener engaging teeth that mesh with the lining are provided, and the keel is disposed between the first fastener engaging teeth and the second fastener engaging teeth.

[0008] As a further improvement, the keel connects two fastener tapes, and first fastener engaging teeth are arranged at the ends of the fastener tapes away from the keel.

[0009] As a further improvement, the keel is integrally formed with the fastener tape or is fixed using sewing or an adhesive.

[0010] As a further improvement, the keel is integrally hollow.

[0011] As a further improvement, the keel is segmental and is in a chain shape, snap-fit shape, or serpentine shape.

[0012] As a further improvement, the keel is mounted on the outer peripheral surface of the case body and is fixed to the case body using a fastening member or an adhesive.

[0013] As a further improvement, the fastener tape has elasticity.

[0014] Also provided is a case body including two casings and a fastener structure for connecting the two casings. The fastener structure includes two fastener tapes and a keel fixedly connected to the fastener tapes. The fastener tapes are provided with first fastener working teeth for realizing the opening and closing of the two casings. The case body is provided with a groove for accommodating the keel, and the fastener tape is fixed to the case body by fixing the keel in the groove.

[0015] As a further improvement, a decorative strip is arranged at the opening of the groove to cover the keel, and the outer peripheral surface of the decorative strip is flush with the outer surface of the case body.

[0016] As a further improvement, the decorative strip is provided with a first locking portion, and the keel is provided with a second locking portion. The decorative strip is fixed by engaging with the second locking portion through the first locking portion.

[0017] As a further improvement, the keel is fixed in the groove using an adhesive or a fastening member.

[0018] As a further improvement, the material of the keel is plastic, soft rubber, wood, metal or leather.

[0019] As a further improvement, the inner wall surface of the groove is provided following the outer wall surface of the keel.

[0020] As a further improvement, one end of the fastener tape is provided with first fastener working teeth, and the other end is provided with second fastener working teeth. The first fastener working teeth are exposed on the case body and mesh with the first fastener working teeth of another fastener body, and the second fastener working teeth mesh with the third fastener working teeth on the lining of the case body.

[0021] Also, a mold is provided, which includes a mold body and a movable member. A first molding portion is provided on the mold, and a second molding portion is provided on the movable member. The second molding portion is arranged along the periphery of the first molding portion. The heated sheet member is adsorbed onto the surface of the first molding portion by vacuum adsorption to form the case body, and the groove is formed by the second molding portion. The case body is the case body according to any one of claims 9 to 15.

[0022] Also, a method for operating a mold including the following steps is provided. (1) Move the four movable members arranged around the mold body toward the horizontal center and gather them.

[0023] (2) Place the heated plastic sheet member on the mold body.

[0024] (3) By vacuum adsorbing the plastic sheet member, adsorb the sheet member downward onto the first molding portion of the mold body to form the case body, and form a groove at the second molding portion of the movable member.

[0025] (4) When demolding, first move the movable member horizontally outward from the center to demold the groove. Next, lower the mold body to separate the case body from the mold body to achieve demolding of the case.

[0026] (5) Finally, take out the case body to complete the punching.

[0027] Also, a method for operating a mold including the following steps is provided.

[0028] (1) Set the four movable members in the fitting grooves around the mold body.

[0029] (2) Place the heated plastic sheet member on the mold body.

[0030] (3) By vacuum-adsorbing the plastic sheet member, the plastic sheet member is adsorbed downward onto the first molding part of the mold body to form the case body, and a groove 14 is formed in the second molding part of the movable member.

[0031] (4) At the time of mold release, after the movable member is released upward in synchronization with the case body and separated from the mold body, the groove is released by moving the movable member laterally.

Advantages of the Invention

[0032] By adopting the above technical solution, the present invention can obtain the following technical effects.

[0033] 1. According to the present application, by fixing the keel to the case body, the fastener body is fixed to the case body. Since manual sewing by a post-head sewing machine is not required when fixing the fastener body, labor costs can be reduced. In addition, the keel can be fixed only by assembly, and the working difficulty is much smaller than that of sewing by a post-head sewing machine, which can guarantee the assembly quality and thus improve the yield. In addition, the fixing method by assembling the keel facilitates automatic production and solves the problem that it cannot be automated in the conventional production line. The fastener structure is modularized to automate the assembly production, optimize the material management of the factory and the personnel arrangement of the production line, greatly improve the production efficiency and production quality, drastically save the labor cost and production cost of the factory, surely reduce the cost and improve the efficiency.

[0034] 2. The fastener tape is modularized and assembled with the keel, and fastener teeth that mesh with the lining part are provided in advance on the inside, which facilitates the attachment and detachment, cleaning or washing of the lining, and improves the usability of the consumer.

[0035] 3. The fastener tape has elasticity, and the elasticity generated by the fastener tape itself realizes the function of expanding the capacity of the cased fastener.

[0036] 4. By fixing the keel to the groove of the case body, the fastener structure is fixed to the case body. Since manual sewing with a post-head machine is not required when fixing the fastener structure, labor costs can be reduced. In addition, the keel can be fixed only by assembly, and the difficulty of the operation is much smaller than that of sewing with a post-head machine, ensuring the quality of assembly and thus improving the yield. Also, the fixing method by assembling the keel facilitates automated production and solves the problem that it cannot be automated in the conventional production line. By modularizing the fastener structure and automating the assembly production, the material management of the factory and the personnel arrangement of the production line are optimized, the production efficiency and quality are greatly improved, the human and production costs of the factory are dramatically saved, the cost is surely reduced, and the efficiency is improved. By accommodating the keel in the groove, the height of the keel can be made lower than the outer peripheral surface of the case body, integrating the appearance of the case body and enhancing the effect and beauty of the case body. At the same time, by providing the groove, the strength of the opening of the case body can be increased, and the strength of the case body can be further increased by the connection between the keel and the groove. This improves the problem in the conventional case with a fastener that the portion near the opening is an upright surface and the strength of the case body is weak.

Brief Description of the Drawings

[0037] To more clearly explain the technical solution of the embodiment of the present invention, the attached drawings necessary for use in the embodiment will be briefly introduced below. It should be understood that the following attached drawings only show some embodiments of the present invention and should not be regarded as a limitation to the scope. Those skilled in the art can obtain other related attached drawings based on these attached drawings without creative labor.

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Modes for Carrying Out the Invention

[0038] In order to more clearly illustrate the objectives, technical solutions and advantages of the embodiments of the present invention, hereinafter, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. It is obvious that the described embodiments are only some, rather than all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention. Therefore, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the present invention for which protection is sought, but merely to show selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention. Examples

[0039] Referring to FIGS. 1 and 2 together, this embodiment provides a fastener structure for connecting the upper casing 11 and the lower casing 12 of the case body 1. This fastener structure includes two fastener bodies. Each fastener body includes a fastener tape 2 and a keel 3. One end of the fastener tape 2 is provided with first fastener engaging teeth 21, and the other end is connected to the lining 13 of the case body 1. The first fastener engaging teeth 21 are exposed on the case body 1 and engage with the first fastener engaging teeth 21 of the other fastener body. The keel 3 is connected to the fastener tape 2, and by fixedly connecting the keel 3 to the case body 1, the fastener body is fixed to the case body 1. Preferably, the keel 3 is mounted on the outer peripheral surface of the case body 1 and fixed to the case body 1 using a fastening member or an adhesive. As an example, the fixing method of the keel 3 to the case body 1 may be fixing by a rivet 4 (pop rivet), fixing by a screw, fixing by an adhesive, heat fusion, sewing with a sewing machine, etc.

[0040] In addition, in this embodiment, by fixing the keel 3 to the case body 1, the fastener body is fixed to the case body 1. Since manual sewing with a post-head sewing machine is not required when fixing the fastener body, labor costs can be reduced. Also, the keel 3 can be fixed only by assembly, and its working difficulty is much smaller than that of sewing with a post-head sewing machine, which can guarantee the assembly quality and thus improve the yield. Moreover, the fixing method by assembling the keel 3 facilitates automated production and solves the problem that it cannot be automated on a conventional production line. The fastener structure is modularized, assembly production is automated, the material management of the factory and the personnel arrangement of the production line are optimized, the production efficiency and production quality are greatly improved, the labor cost and production cost of the factory are dramatically saved, and the cost is surely reduced and the efficiency is improved.

[0041] Based on the above-described embodiments, in one possible example of the present invention, at the other end of the fastener tape 2 opposite to the first fastener engaging teeth 21, second fastener engaging teeth 22 that mesh with the lining 13 are provided, and the keel 3 is disposed between the first fastener engaging teeth 21 and the second fastener engaging teeth 22. As an example, the entire one fastener tape 2 is selected, bent according to the required dimensions, sewn with a sewing machine, and the bent portion is used for connection with the keel 3. In other examples, also, two fastener tapes 2 are joined together and sewn with a sewing machine, the bent portions of the two fastener parts are connected to the keel 3, the first fastener engaging teeth 21 are disposed at the end of the fastener tape 2 away from the keel 3, one end is meshed with another fastener body, and the other end may be meshed with the lining 13. To integrate the lining, the fastener, and the case body of the conventional case with a fastener, it is necessary to sew them together by hand and it cannot be disassembled either. The fastener tape 2 of this embodiment is modularized and assembled with the keel 3, and fastener engaging teeth that mesh with the lining portion are provided in advance on the inside, facilitating the attachment and detachment of the lining 13 and cleaning or washing, and improving the usability for consumers.

[0042] In one preferred embodiment, the keel 3 and the fastener tape 2 are integrally formed. For example, they may be overmolded by injection molding, but are not limited thereto. In other embodiments, the keel 3 and the fastener tape 2 may be fixed by methods such as sewing with a sewing machine (shown in FIG. 6), heat fusion, rivets 4, engagement, snap fit, adhesive, etc. Preferably, the keel 3 and the fastener tape 2 are integrally injection molded, and the bonding strength is higher. The keel 3 is an integral keel or a segmented keel. The integral keel is an independent keel as a whole, and the segmented keel is a keel composed of a plurality of segments. Since the keel 3 can be bent according to the shape of the case body, it can conform to any curvature on the outer periphery of the case body 1. The length of the keel 3 can be adjusted by the number of segments, and the length of the segments can be set as required. Referring collectively to FIGS. 3 to 5, the keel 3 may be in a chain shape, a snap fit shape, a meandering shape, or the like. The keel 3 may be made of materials such as plastic, soft rubber, wood, metal, leather, etc. In another embodiment, the keel 3 is integrally hollow. The keel 3 is integrally extruded hollow or bent and formed from metal. It may be made of metal, soft rubber, hard rubber, or a co-extruded material of soft and hard, or wood. There are many selectable materials and the strength is good. The keel 3 and the fastener can be integrally adapted to any curvature on the outer periphery of the case body 1. Referring collectively to FIGS. 7 to 10, the keel 3 may have different shapes. Also, in order to enhance the robustness at the locking position, a rubber strip 31 may be laid at the locking position. The rubber strip 31 may be made of hard rubber, soft rubber, or a combination of both. The fixing rivets 4 may be arranged on the bottom surface or the side surface of the keel 3, and various mounting forms and shapes are possible, which can meet the design needs of different case bodies 1.

[0043] Furthermore, the fastener tape 2 has elasticity, and due to the elasticity generated by the fastener tape 2 itself, the capacity expansion function of the case with a fastener is realized, and the capacity of the case body 1 after use can be expanded by 20% or more. It is simpler, more convenient and practical than the fastener expansion and contraction function of the conventional case with a fastener. Here, the fastener tape 2 can be made from recycled PET bottles as raw materials, processed to produce a new environmentally friendly material, and woven into the elastic fastener tape 2, but it is not limited to this, and other elastic fabrics may also be used. Thereby, it can be used for various types of cases with fasteners, such as front-opening, rear-opening, side-opening, top-opening, with an external pocket, with an external backpack, etc. Here, the case with a fastener is a case that opens and closes using a fastener, including, but not limited to, a case with a suction molding fastener, an injection molding fastener pull box, a frame type case with a fastener, a thermoforming case with a fastener, a cloth case, a cosmetic case, etc., and is not specifically limited.

[0044] Referring to FIGS. 11 to 14 together, the present invention further provides a case body including an upper casing 11 and a lower casing 12 connected through a fastener structure, and the fastener structure is the fastener structure described in any one of the above embodiments. Preferably, a groove 14 is designed around the opening of the case, and the groove 14 directly reinforces the case opening, and by adding a keel 3 in the groove 14, the strength of the entire case body 1 is increased. During assembly, the keel 3 is engaged with and fixed in the groove 14 to fixedly connect the fastener structure to the case body 1. For example, a rivet 4 (pop rivet) is driven from the inside to the outside of the case body 1 to fix the keel 3. The keel 3 may further be fixed to the groove 14 by screws, adhesives, heat fusion, sewing with a sewing machine, etc.

[0045] Another embodiment provides a case body including two casings (an upper casing 11 and a lower casing 12) and a fastener structure for connecting the two casings. The fastener structure includes two fastener tapes 2 and a keel 3 fixedly connected to the fastener tapes 2. Among them, the fastener tape 2 is provided with first fastener teeth 21 for realizing the opening and closing of the two casings, and the case body is provided with a groove 14 for accommodating the keel 3. By fixing the keel 3 in the groove 14, the fastener tape 2 is fixed to the case body.

[0046] Furthermore, by making the height of the keel 3 less than or equal to the depth of the groove 14, the height of the keel 3 can be made lower than the outer peripheral surface of the case body 1, making the appearance of the case body 1 integral and enhancing the overall effect and beauty of the case body 1. Preferably, a decorative strip 5 is arranged to cover the keel 3 at the opening of the groove 14, and by making the outer peripheral surface of this decorative strip 5 flush with the outer surface of the case body, the appearance of the case body 1 is adjusted. In one embodiment, the decorative strip 5 is provided with a first locking portion, and the keel 3 is provided with a second locking portion. The decorative strip 5 is fixed by engaging with the second locking portion through the first locking portion. The first locking portion and the second locking portion may be provided as a snap fit, but are not limited thereto.

[0047] In particular, in this embodiment, referring to FIG. 13, the case body 1 has no undulations due to steps like the conventional opening method, the surface of the case body 1 is flatter, has a better sense of integrity, and looks more beautiful. Referring to FIG. 14, the case body 1 has no large gaps on the outer periphery like the conventional opening method, saves space, and has a larger capacity of the case body 1.

[0048] In another embodiment, referring to FIGS. 15 to 18 together, the inner wall surface of the groove 14 is provided following the outer wall surface of the keel 3. That is, the groove 14 is adjusted according to various shapes of the keel 3 and may be square, circular, elliptical, trapezoidal, etc., and is not specifically limited.

[0049] Preferably, the groove 14 is provided near the opening of the case body, and the position of the groove 14 may be as shown in FIGS. 19 to 23. By providing the groove 14, the strength of the opening of the case body 1 can be increased, and the strength of the case body 1 can be further increased by the connection between the keel 3 and the groove 14. This improves the problem that in a conventional case with a fastener, the portion near the opening is an upright surface and the strength of the case body is weak. Preferably, as shown in FIG. 27, the dimensional range of the groove 14 is as follows: w1: 0.3 - 35 mm; w2: 0.5 - 40 mm; w3: 1.0 - 40 mm; h: 0.3 - 35 mm.

[0050] Based on the above-described embodiments, in one possible embodiment of the present invention, the fastener tape 2 is provided with first fastener engaging teeth 21 at one end and second fastener engaging teeth 22 at the other end. The first fastener engaging teeth 21 are exposed on the case body 1 and mesh with the first fastener engaging teeth 21 of another fastener body, and the second fastener engaging teeth 22 mesh with the third fastener engaging teeth 131 of the lining 13 of the case body 1. Preferably, by integrally forming the fastener tape 2 with the keel 3, it can conform to any curvature of the groove 14, and the length of the keel 3 can also be arbitrarily cut as required.

[0051] Referring to FIGS. 24 and 25 together, the present invention further provides a mold including a mold body 6 provided with a first forming portion 61 and a movable member 7 provided with a second forming portion 71. The movable member 7 is arranged along the periphery of the first forming portion 61, and adsorbs a heated sheet member 8 onto the surface of the first forming portion 61 by vacuum adsorption to form a case body, and the second forming portion 71 forms the groove 14, where the case body is the case body described in the above embodiment. For example, the second forming portion 71 is provided to protrude outward, and when the mold is opened, the movable member 7 is first moved outward to facilitate the demolding of the case body.

[0052] Specifically, the usage steps of the mold include the following steps.

[0053] Gather the four movable members 7 arranged around the upper part of the (1)-type main body 6 toward the horizontal center.

[0054] (2) Place the heated plastic sheet member 8 on the mold main body 6.

[0055] (3) By vacuum-sucking the plastic sheet member 8, adsorb the sheet member 8 downward onto the first molding part 61 of the mold main body 6 to form the case main body, and form the groove 14 in the second molding part 71 of the movable member 7.

[0056] (4) At the time of mold release, first, move the movable member 7 horizontally outward from the center to release the groove 14. Next, lower the mold main body 6 to separate the case main body from the mold main body 6, thereby realizing the mold release of the case.

[0057] (5) Finally, take out the case main body to complete the mold extraction.

[0058] Return the movable member 7 and the mold main body 6, and repeat the above steps to achieve mass production. Note that this molding and mold release process is applicable to both suction molding with a female mold and suction molding with a male mold. When applied to suction molding with a male mold, the second molding part 71 of the movable member 7 may be provided to be concave. This is not limited thereto and is not specifically limited.

[0059] In another embodiment, referring to FIG. 26, a fitting groove that fits with the movable member 7 is formed in the mold main body 6, and the molding and mold release processes include the following steps.

[0060] (1) Set the four movable members 7 in the fitting grooves around the upper periphery of the mold main body 6.

[0061] (2) Place the heated plastic sheet member 8 on the mold main body 6.

[0062] (3) By vacuum-sucking the plastic sheet member 8, the sheet member 8 is sucked downward onto the first molding portion 61 of the mold body 6 to form the case body, and a groove 14 is formed in the second molding portion 71 of the movable member 7.

[0063] (4) At the time of mold release, after the movable member 7 is released upward in synchronization with the case body and separated from the mold body 6, the movable member 7 is moved laterally to release the groove 14. By repeating the above steps, mass production is realized.

[0064] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples. All technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention.

Explanation of Reference Numerals

[0065] 1 Case body 11 Upper casing 12 Lower casing 13 Lining 131 Third fastener engaging teeth 14 Groove 2 Fastener tape 21 First fastener engaging teeth 22 Second fastener engaging teeth 3 Keel 31 Rubber strip 4 Rivet 5 Decorative strip 6 Mold body 61 First molding portion 7 Movable member 71 Second molding portion 8 Sheet member

Claims

1. A fastener structure for connecting an upper casing and a lower casing of a case body, comprising two fastener bodies, wherein each fastener body includes a fastener tape and a keel, one end of the fastener tape is provided with first fastener teeth, the other end is connected to the lining of the case body, and the first fastener teeth mesh with the first fastener teeth of another fastener body. The keel is connected to the fastener tape, and by fixedly connecting the keel to the case body, the fastener body is fixed to the case body. A fastener structure characterized by the above.

2. On the other end of the fastener tape opposite to the first fastener teeth, second fastener teeth meshing with the lining are provided, and the keel is arranged between the first fastener teeth and the second fastener teeth. The fastener structure according to claim 1, characterized by the above.

3. The keel connects two fastener tapes, and first fastener teeth are arranged at the ends of the fastener tapes away from the keel. The fastener structure according to claim 1, characterized by the above.

4. The keel is integrally formed with the fastener tape or is fixed using sewing or an adhesive. The fastener structure according to claim 1, characterized by the above.

5. The keel is integrally hollow. The fastener structure according to claim 1, characterized by the above.

6. The keel is segmental and is in a chain shape, snap-fit shape, or serpentine shape. The fastener structure according to claim 1, characterized by the above.

7. The keel is mounted on the outer peripheral surface of the case body and is fixed to the case body using a fastening member or an adhesive. The fastener structure according to claim 1, characterized by the above.

8. The fastener tape has elasticity. The fastener structure according to any one of claims 1 to 7, characterized by the above.

9. A case body, comprising two casings and a fastener structure for connecting the two casings, wherein the fastener structure includes two fastener tapes and a keel fixedly connected to the fastener tapes. The fastener tape is provided with first fastener engaging teeth for opening and closing the two casings, the case body is provided with a groove for accommodating the keel, and the fastener tape is fixed to the case body by fixing the keel in the groove. A case body characterized by the above.

10. A decorative strip is arranged at the opening of the groove so as to cover the keel, and the outer peripheral surface of the decorative strip is flush with the outer surface of the case body. The case body according to claim 9, characterized by the above.

11. The decorative strip is provided with a first locking portion, the keel is provided with a second locking portion, and the decorative strip is fixed by engaging with the second locking portion by the first locking portion. The case body according to claim 10, characterized by the above.

12. The keel is fixed to the groove using an adhesive or a fastening member. The case body according to claim 9, characterized by the above.

13. The material of the keel is plastic, soft rubber, wood, metal or leather. The case body according to claim 9, characterized by the above.

14. The inner wall surface of the groove is provided following the outer wall surface of the keel. The case body according to claim 9, characterized by the above.

15. One end of the fastener tape is provided with first fastener engaging teeth, the other end is provided with second fastener engaging teeth, the first fastener engaging teeth are exposed on the case body and mesh with the first fastener engaging teeth of another fastener body, and the second fastener engaging teeth mesh with the third fastener engaging teeth on the lining of the case body. The case body according to claim 9, characterized by the above.

16. A mold including a mold body and a movable member, the mold is provided with a first molding portion, the movable member is provided with a second molding portion, a heated sheet member is arranged along the periphery of the first molding portion and adsorbed on the surface of the first molding portion by vacuum adsorption to form the case body, the second molding portion forms the groove, and the case body is the case body according to any one of claims 9 to 15. A mold characterized by the above.

17. Step (1) of gathering four movable members arranged around the mold body toward the horizontal center; Step (2) of placing a heated plastic sheet member on the mold body; By vacuum-sucking the plastic sheet member, sucking the sheet member downward onto the first molding portion of the mold body to form the case body, and forming a groove in the second molding portion of the movable member (step 3); When demolding, first, move the movable member horizontally outward from the center to demold the groove, and then lower the mold body to separate the case body from the mold body to achieve demolding of the case (step 4); Finally, take out the case body to complete the punching (step 5); The method for operating a mold according to claim 16, characterized by including the above.

18. Setting four movable members in the fitting grooves around the mold body (step 1); Placing the heated plastic sheet member on the mold body (step 2); By vacuum-sucking the plastic sheet member, sucking the plastic sheet member downward onto the first molding portion of the mold body to form the case body, and forming a groove in the second molding portion of the movable member (step 3); When demolding, after demolding the movable member upward in synchronization with the case body and separating it from the mold body, move the movable member laterally to demold the groove (step 4); The method for operating a mold according to claim 16, characterized by including the above.

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